Crystal Structures, Thermal Behaviors, and C-H…O=C Hydrogen Bondings of Biodegradable Polymers Studied by Infrared Spectroscopy and X-ray Diffraction
| Project/Area Number |
20550197
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Polymer/Textile materials
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| Research Institution | Kwansei Gakuin University |
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Principal Investigator |
SATO Harumi Kwansei Gakuin University, 理工学研究科, 専門技術員 (10288558)
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| Co-Investigator(Kenkyū-buntansha) |
SASAKI Sono 京都工芸繊維大学, 工芸科学研究科, 准教授 (40304745)
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| Co-Investigator(Renkei-kenkyūsha) |
OZAKI Yukihiro 関西学院大学, 理工学部, 教授 (00147290)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2008: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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| Keywords | 生分解性高分子 / メソ構造 / 水素結合 / 結晶構造 / 高分子構造・物性 / 生体高分子 |
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| Research Abstract |
We have investigated crystal structure and C-H…O=C hydrogen bonding by using infrared (IR) spectroscopy and wide-angle X-ray diffraction (WAXD) for poly (3-hydroxybutyrate) (PHB) and poly (3-hydroxyvalerate) (PHV). PHB has a particular C-H…O=C hydrogen bonding between the C=O group and the CH_3 group along the a axis, which is the same direction as its chain folding direction. On the other hand, PHV has C-H…O=C hydrogen bondings between the C=O group and the one or two CH_2 groups in the main or side chains. The difference in the chain folding direction between PHV and PHB may come from the difference in the inter- or intramolecular interactions in their crystal structures. It is very likely that the C-H…O=C hydrogen bonding stabilizes the chain folding in the lamella structure of PHB and PHV.
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Report
(4 results)
Research Products
(102 results)
